Pit Bike 125cc 4 Stroke Dirt Bike - Answered Questions & Fixed issues

Check the wiring on the connector plugs make sure all the wires are the same color on both sides, red to red blue to blue and so on. I had the same problem After replacing a stator and just plugging it in,after two weeks a new cdi and coil i noticed there were two wires transposed.

Limited help here. The best thing is to use Google Translate and email the Chinese maker for Service Manual PDF. https://www.google.com/search?q=124cc+ducar+dirt+bike+wiring+diagram Or contact local distributors https://www.google.com/search?q=124cc+ducar+dirt+bike ..

Use a timing light to get a ball park setting and then your ears will finish the job.

Hi it sounds to me that the teeth on the front chain sprket could be worn so the chain locks,best thing to do is to take the side caseing off and check.(if it needs replaceing its always best to replace the back sproket and chain aswell,wish you all the best.

1. Wrong coil for service application. 2. Damaged or worn out spark plugs. 3. Spark plug gap too wide. Amazon com Suriora Mouse Pad Comfort Silica Gel Wrist Rest Support Mouse...

Has bike got compreshion

tighten the chain and straighten the back tyre

you will have to check lead to spark plug then lead to coil if your not getting spark at plug it could be a number of things ingintion or just a loose wire best of luck hope you solve it

is the bike a2 stroke or a four stroke? regards Ray.

Rings or oil in the gas.

use a slide hammer with bearing attachment to pull out old bearings and replace with new ones

You can check ur values but some bike do make a we ticking from the values and it will back fire when revved up because of the extra fuel once revved that hasn't brine burn as it revs back down to idle speed.

Clean carb and air mix screw needs set and rev screw

when you put a bike into gear the chain tightens sounds like it is to tight move the back wheel closer to the swing arm about an inch that should do it

hope this helps

John

Replace the co

Regular unleded

Check to see if the ruin burton is on, if so out could be the switch isn't altering the connection to go the plug.

Clutch worn or cable to slack or tight or gear box is smashed

About 80\90 mph

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